The incident is under investigation, according to the DOD news release.

Rast was stationed at Naval Medical Center, Expeditionary Medical Force Detachment. The staff established an electronic memory book as a way to share memories. It will be compited and provided as a tribute to Rast's family, according to a medical center spokesperson.

Rast enlisted in the U.S. Navy in April 2009. His awards included National Defense Service Medal, Pistol Markmanship Medal and Global War on Terrorism Service Medal.